Alert archive / Utah / Areal Flood Advisories in 2009
Areal Flood Advisory 21, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this areal flood advisory at Aug 14, 2009, 1:58 PM MDT for Emery County, Sevier County, Wayne County, Utah. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 14, 2009, 1:58 PM MDT (19:58 UTC)
- Expired
- Aug 14, 2009, 4:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
Counties Emery County, UT, Sevier County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 194 km from the middle of the area, began a volume at 20:01 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.0 hours before the alert went out and 241 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 499 J/kg
- Mixed-layer CIN
- -253 J/kg
- Mixed-layer LCL
- 2195 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Salt Lake City, UT wrote its last area forecast discussion before this areal flood advisory went out at Aug 14, 10:18 AM MDT, 3 hours 40 minutes earlier.
Area forecast discussion, Aug 14, 10:18 AM MDT, 3 hours 40 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Aug 14, 5:41 AM MDT, 8 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 541 AM MDT FRI AUG 14 2009 UTZ001>016-019>021-517-518-WYZ021-151200- CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT- SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT- GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS- WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80- WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS- WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL- SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH- UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH- GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS- SOUTHERN MOUNTAINS-SOUTHWEST WYOMING- 541 AM MDT FRI AUG 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT STRONG SOUTH WINDS WILL DEVELOP ACROSS WESTERN UTAH TODAY AHEAD OF AN APPROACHING COLD FRONT. THESE WINDS WILL IMPACT TRAVEL ALONG HIGHWAYS ACROSS WESTERN UTAH AND MAY RESULT IN REDUCED VISIBILITIES DUE TO BLOWING DUST. THE COLD FRONT WILL ARRIVE OVER NORTHWEST UTAH THIS EVENING...WITH GUSTY NORTHWEST WINDS CONTINUING BEHIND THE FRONT. IN ADDITION...DRIER AIR SPREADING INTO WESTERN UTAH WILL COMBINE WITH THE WINDS TO RESULT IN SEVERE FIRE WEATHER CONDITIONS. LINGERING MOISTURE WILL RESULT IN THUNDERSTORMS WITH BRIEF HEAVY RAIN ACROSS THE SOUTHEAST TODAY. OTHERWISE...HIGH-BASED THUNDERSTORMS COULD RESULT IN GUSTY WINDS ACROSS PARTS OF NORTHEAST AND EAST-CENTRAL UTAH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE COLD FRONT WILL USHER IN MUCH COOLER TEMPERATURES FOR THE WEEKEND. PRECIPITATION IS EXPECTED ACROSS PORTIONS OF NORTHERN UTAH ON SATURDAY...OTHERWISE A DRIER AIRMASS WILL PERSIST ACROSS THE AREA. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 6:02 PM MDT | Areal Flood Advisory | SLC | Garfield, Iron | 3 hr |
| Aug 14, 3:56 AM MDT | Wind Advisory | SLC | 18 hr | |
| Aug 14, 2:09 PM MDT | Special Weather Statement | SLC | Morgan | 36 min |
| Aug 14, 3:25 PM MDT | Special Weather Statement | SLC | Carbon | 50 min |
| Aug 14, 3:28 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne, Utah | 47 min |
| Aug 14, 3:35 PM MDT | Special Weather Statement | SLC | Salt Lake | 25 min |
| Aug 14, 4:04 PM MDT | Special Weather Statement | SLC | Morgan | 41 min |
Nearby
Areal Flood Advisories in Utah, 2009Every areal flood advisory in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.